/* ═══════════════════════════════════════════════════
   DrFarm — Multi-Page Modern Dashboard CSS
   ═══════════════════════════════════════════════════ */

/* ── Reset & Variables ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:         #f4f6f8;
    --surface:    #ffffff;
    --card:       #ffffff;
    --text:       #0f1c2e;
    --text-2:     #5b6b7d;
    --text-3:     #94a3b8;
    --border:     #e2e8f0;
    --green:      #22c55e;
    --green-bg:   #dcfce7;
    --green-dark: #15803d;
    --yellow:     #eab308;
    --yellow-bg:  #fef9c3;
    --red:        #ef4444;
    --red-bg:     #fee2e2;
    --blue:       #3b82f6;
    --blue-bg:    #dbeafe;
    --purple:     #8b5cf6;
    --purple-bg:  #ede9fe;
    --accent:     #059669;
    --accent-l:   #10b981;
    --gradient:   linear-gradient(135deg, #059669 0%, #10b981 50%, #34d399 100%);
    --gradient-b: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --shadow-xs:  0 1px 2px rgba(0,0,0,0.04);
    --shadow:     0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.07);
    --shadow-lg:  0 10px 30px rgba(0,0,0,0.10);
    --radius:     12px;
    --radius-sm:  8px;
    --radius-lg:  16px;
    --radius-xl:  20px;
    --sidebar-w:  260px;
    --topbar-h:   60px;
    --font:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c8d0d8; border-radius: 3px; }

/* ═══════════ SIDEBAR ═══════════ */
.sidebar {
    position: fixed;
    left: 0; top: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--gradient-b);
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    z-index: 200;
    transition: transform 0.3s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1.25rem 1.4rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.brand-icon { font-size: 1.8rem; }
.brand-name { font-size: 1.15rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
.brand-sub  { font-size: 0.68rem; color: #94a3b8; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; }

.sidebar-nav {
    flex: 1;
    padding: 0.75rem 0.75rem;
}
.nav-group-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
    padding: 1rem 0.75rem 0.4rem;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.15s;
    position: relative;
    margin-bottom: 2px;
}
.nav-item:hover {
    background: rgba(255,255,255,0.07);
    color: #fff;
}
.nav-item.active {
    background: rgba(16,185,129,0.15);
    color: #34d399;
    font-weight: 600;
}
.nav-item.active::before {
    content: '';
    position: absolute;
    left: -0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--accent-l);
    border-radius: 0 3px 3px 0;
}
.nav-icon { font-size: 1.05rem; width: 22px; text-align: center; }
.nav-badge {
    margin-left: auto;
    background: var(--red);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    width: 20px; height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255,255,255,0.07);
}
.sidebar-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    color: #94a3b8;
}
.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #64748b;
}
.status-dot.online  { background: var(--green); box-shadow: 0 0 6px rgba(34,197,94,0.6); }
.status-dot.offline { background: var(--red); }

/* ═══════════ MAIN WRAPPER ═══════════ */
.main-wrap {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s cubic-bezier(.4,0,.2,1);
}

/* ═══════════ TOP BAR ═══════════ */
.topbar {
    height: var(--topbar-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-xs);
}
.topbar-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    flex: 1;
}
.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.topbar-time {
    font-size: 0.82rem;
    color: var(--text-2);
    font-weight: 500;
}
.topbar-badge {
    font-size: 1.2rem;
    cursor: pointer;
    position: relative;
    transition: transform 0.2s;
}
.topbar-badge:hover { transform: scale(1.15); }
.topbar-badge.alert-active::after {
    content: '';
    position: absolute;
    top: -2px; right: -2px;
    width: 10px; height: 10px;
    background: var(--red);
    border-radius: 50%;
    border: 2px solid var(--surface);
    animation: pulse 1.5s infinite;
}

.sidebar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.sidebar-toggle span {
    display: block;
    width: 20px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: 0.2s;
}

/* ═══════════ PAGE CONTENT ═══════════ */
.page-content {
    flex: 1;
    padding: 1.5rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* ═══════════ FOOTER ═══════════ */
.main-footer {
    text-align: center;
    padding: 1.25rem;
    font-size: 0.75rem;
    color: var(--text-3);
    border-top: 1px solid var(--border);
}

/* ═══════════ HERO METRIC CARDS ═══════════ */
.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.hero-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.15rem 1.35rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}
.hero-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.hero-card .card-icon {
    width: 42px; height: 42px;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 0.65rem;
}
.hero-card .card-label {
    font-size: 0.72rem; font-weight: 600; color: var(--text-2);
    text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.2rem;
}
.hero-card .card-value { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.hero-card .card-sub { font-size: 0.78rem; color: var(--text-2); margin-top: 0.3rem; }

.hero-card.green  .card-icon { background: var(--green-bg); color: var(--green); }
.hero-card.red    .card-icon { background: var(--red-bg);   color: var(--red); }
.hero-card.blue   .card-icon { background: var(--blue-bg);  color: var(--blue); }
.hero-card.yellow .card-icon { background: var(--yellow-bg); color: var(--yellow); }
.hero-card.purple .card-icon { background: var(--purple-bg); color: var(--purple); }
.hero-card.green  .card-value { color: var(--green); }
.hero-card.red    .card-value { color: var(--red); }
.hero-card.blue   .card-value { color: var(--blue); }
.hero-card.yellow .card-value { color: var(--yellow); }
.hero-card.purple .card-value { color: var(--purple); }

/* ═══════════ DASHBOARD GRID ═══════════ */
.dash-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}
.dash-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

/* ═══════════ PANEL / CARD ═══════════ */
.panel {
    background: var(--card);
    border-radius: var(--radius);
    padding: 1.25rem 1.4rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.panel.full { grid-column: 1 / -1; }
.panel-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem;
}
.panel-title {
    font-size: 0.95rem; font-weight: 700; color: var(--text);
    display: flex; align-items: center; gap: 8px;
}
.panel-badge {
    font-size: 0.68rem; font-weight: 600; padding: 3px 10px;
    border-radius: 20px; background: var(--green-bg); color: var(--green);
}
.panel-badge.warn   { background: var(--yellow-bg); color: #a16207; }
.panel-badge.danger { background: var(--red-bg); color: var(--red); }
.panel-badge.info   { background: var(--blue-bg); color: var(--blue); }
.panel-badge.purple { background: var(--purple-bg); color: var(--purple); }

/* ═══════════ SENSOR GRID ═══════════ */
.sensor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}
.sensor-item {
    background: var(--bg); border-radius: var(--radius-sm);
    padding: 1rem; text-align: center; transition: transform 0.15s;
}
.sensor-item:hover { transform: scale(1.03); }
.sensor-item .s-icon  { font-size: 1.6rem; margin-bottom: 0.3rem; }
.sensor-item .s-value { font-size: 1.4rem; font-weight: 700; color: var(--text); }
.sensor-item .s-label { font-size: 0.7rem; color: var(--text-2); font-weight: 500; text-transform: uppercase; letter-spacing: 0.03em; }
.sensor-item .s-unit  { font-size: 0.73rem; color: var(--text-3); }

/* ═══════════ NODE LIST ═══════════ */
.node-list { list-style: none; }
.node-item { display: flex; align-items: center; gap: 10px; padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.node-item:last-child { border-bottom: none; }
.node-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.node-dot.online  { background: var(--green); box-shadow: 0 0 6px rgba(34,197,94,0.5); }
.node-dot.offline { background: #cbd5e1; }
.node-name { font-weight: 600; font-size: 0.88rem; }
.node-seen { font-size: 0.75rem; color: var(--text-2); margin-left: auto; }

/* ═══════════ ALERT LIST ═══════════ */
.alert-list { list-style: none; max-height: 320px; overflow-y: auto; }
.alert-item { display: flex; gap: 10px; padding: 0.6rem 0; border-bottom: 1px solid var(--border); align-items: flex-start; }
.alert-item:last-child { border-bottom: none; }
.alert-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); flex-shrink: 0; margin-top: 6px; }
.alert-dot.resolved { background: var(--green); }
.alert-dot.whatsapp { background: #25d366; }
.alert-dot.gsm { background: var(--blue); }
.alert-msg { font-size: 0.84rem; color: var(--text); line-height: 1.45; }
.alert-time { font-size: 0.7rem; color: var(--text-3); }
.alert-channel { font-size: 0.65rem; font-weight: 600; padding: 2px 8px; border-radius: 12px; display: inline-block; margin-top: 3px; }
.alert-channel.wa   { background: #dcfce7; color: #15803d; }
.alert-channel.gsm  { background: var(--blue-bg); color: var(--blue); }
.alert-channel.sys  { background: var(--bg); color: var(--text-2); }

/* ═══════════ CHART WRAPPER ═══════════ */
.chart-wrap { width: 100%; position: relative; height: 260px; }
.chart-wrap canvas { width: 100% !important; height: 100% !important; }

/* ═══════════ PROGRESS RING ═══════════ */
.ring-wrap { display: flex; align-items: center; justify-content: center; gap: 2rem; padding: 1rem 0; flex-wrap: wrap; }
.ring-container { position: relative; width: 130px; height: 130px; }
.ring-container svg { transform: rotate(-90deg); }
.ring-container .ring-bg { fill: none; stroke: var(--border); stroke-width: 10; }
.ring-container .ring-fill { fill: none; stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.ring-label { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
.ring-label .ring-val { font-size: 1.5rem; font-weight: 800; line-height: 1; }
.ring-label .ring-sub { font-size: 0.68rem; color: var(--text-2); font-weight: 500; }

/* ═══════════ BUTTONS ═══════════ */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 0.55rem 1.25rem; border-radius: var(--radius-sm);
    font-size: 0.84rem; font-weight: 600; border: none;
    cursor: pointer; transition: all 0.2s; text-decoration: none;
    font-family: var(--font);
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 2px 8px rgba(5,150,105,0.25); }
.btn-primary:hover { box-shadow: 0 4px 16px rgba(5,150,105,0.35); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-outline:hover { background: var(--green-bg); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: #2563eb; }
.btn-sm { padding: 0.35rem 0.85rem; font-size: 0.76rem; }
.btn-lg { padding: 0.7rem 1.75rem; font-size: 0.95rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ═══════════ FORM INPUTS ═══════════ */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-2); margin-bottom: 0.35rem; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 0.6rem 0.85rem; border: 1.5px solid var(--border);
    border-radius: var(--radius-sm); font-size: 0.88rem; font-family: var(--font);
    background: var(--surface); color: var(--text); transition: border-color 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(5,150,105,0.1); }
.form-textarea { resize: vertical; min-height: 80px; }

/* ═══════════ UPLOAD AREA ═══════════ */
.upload-area {
    border: 2px dashed var(--border); border-radius: var(--radius);
    padding: 2rem; text-align: center; cursor: pointer;
    transition: border-color 0.2s, background 0.2s; position: relative;
}
.upload-area:hover { border-color: var(--accent); background: #f0fdf4; }
.upload-area input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-area .up-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.upload-area .up-text { font-size: 0.9rem; color: var(--text-2); font-weight: 500; }
.upload-area .up-hint { font-size: 0.73rem; color: var(--text-3); margin-top: 0.25rem; }

/* ═══════════ DISEASE RESULT ═══════════ */
.disease-result {
    background: var(--bg); border-radius: var(--radius-sm);
    padding: 1.15rem 1.35rem; margin-top: 1rem; display: none;
}
.disease-result.active { display: block; animation: fadeIn 0.4s ease; }
.disease-result .dr-name { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
.disease-result .dr-row { display: flex; justify-content: space-between; padding: 0.3rem 0; font-size: 0.86rem; }
.disease-result .dr-label { color: var(--text-2); }
.disease-result .dr-val   { font-weight: 600; }

/* ═══════════ TIMELINE (7-Day Plan) ═══════════ */
.plan-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem; }
.plan-meta { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.plan-tag { font-size: 0.72rem; font-weight: 600; padding: 4px 12px; border-radius: 20px; }
.plan-tag.disease { background: var(--red-bg); color: var(--red); }
.plan-tag.risk    { background: var(--yellow-bg); color: #a16207; }

.timeline { position: relative; padding-left: 2.5rem; }
.timeline::before { content: ''; position: absolute; left: 15px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { position: relative; padding-bottom: 1.15rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
    position: absolute; left: -2.5rem; top: 2px;
    width: 30px; height: 30px; border-radius: 50%;
    background: var(--accent); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.72rem; font-weight: 700; z-index: 1;
    box-shadow: 0 2px 6px rgba(5,150,105,0.3);
}
.timeline-content { background: var(--bg); border-radius: var(--radius-sm); padding: 0.85rem 1rem; transition: box-shadow 0.2s; }
.timeline-content:hover { box-shadow: var(--shadow); }
.timeline-day { font-size: 0.7rem; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.05em; }
.timeline-title { font-size: 0.92rem; font-weight: 700; margin: 0.1rem 0 0.2rem; display: flex; align-items: center; gap: 6px; }
.timeline-desc { font-size: 0.82rem; color: var(--text-2); line-height: 1.5; }

/* ═══════════ MARKETPLACE CARDS ═══════════ */
.product-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem; margin-bottom: 1.5rem;
}
.product-card {
    background: var(--card); border-radius: var(--radius);
    border: 1px solid var(--border); overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.product-img {
    height: 160px; background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    display: flex; align-items: center; justify-content: center;
    font-size: 3.5rem; border-bottom: 1px solid var(--border);
}
.product-body { padding: 1rem 1.15rem; }
.product-cat { font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); margin-bottom: 0.3rem; }
.product-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 0.3rem; }
.product-desc { font-size: 0.8rem; color: var(--text-2); line-height: 1.45; margin-bottom: 0.6rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-size: 1.15rem; font-weight: 800; color: var(--accent); }
.product-unit  { font-size: 0.7rem; color: var(--text-3); }
.product-seller { font-size: 0.72rem; color: var(--text-2); }
.product-rating { font-size: 0.78rem; color: var(--yellow); }
.product-loc { font-size: 0.7rem; color: var(--text-3); margin-top: 0.15rem; }

/* ═══════════ LOAN CARDS ═══════════ */
.loan-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.25rem; }
.loan-card {
    background: var(--card); border-radius: var(--radius);
    padding: 1.25rem 1.35rem; border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}
.loan-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.loan-top { display: flex; align-items: center; gap: 12px; margin-bottom: 0.75rem; }
.loan-logo { font-size: 2rem; width: 50px; height: 50px; background: var(--bg); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; }
.loan-name { font-size: 1.02rem; font-weight: 700; }
.loan-type { font-size: 0.7rem; color: var(--text-2); font-weight: 500; }
.loan-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; margin: 0.75rem 0; }
.loan-stat { text-align: center; padding: 0.5rem; background: var(--bg); border-radius: var(--radius-sm); }
.loan-stat-val { font-size: 1.05rem; font-weight: 700; color: var(--accent); }
.loan-stat-label { font-size: 0.65rem; color: var(--text-3); text-transform: uppercase; font-weight: 600; }
.loan-desc { font-size: 0.82rem; color: var(--text-2); line-height: 1.45; margin-bottom: 0.5rem; }
.loan-reqs { font-size: 0.75rem; color: var(--text-3); line-height: 1.4; }
.loan-rating { font-size: 0.78rem; color: var(--yellow); margin-top: 0.5rem; }

/* ═══════════ CHATBOT ═══════════ */
.chat-container {
    display: flex; flex-direction: column;
    height: calc(100vh - var(--topbar-h) - 120px);
    min-height: 400px;
}
.chat-messages {
    flex: 1; overflow-y: auto; padding: 1rem 0;
    display: flex; flex-direction: column; gap: 0.75rem;
}
.chat-msg { display: flex; gap: 10px; max-width: 80%; animation: fadeIn 0.3s ease; }
.chat-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.chat-msg.assistant { align-self: flex-start; }
.chat-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; flex-shrink: 0;
}
.chat-msg.user .chat-avatar { background: var(--blue-bg); }
.chat-msg.assistant .chat-avatar { background: var(--green-bg); }
.chat-bubble {
    padding: 0.7rem 1rem; border-radius: var(--radius);
    font-size: 0.88rem; line-height: 1.55;
}
.chat-msg.user .chat-bubble { background: var(--blue); color: #fff; border-bottom-right-radius: 4px; }
.chat-msg.assistant .chat-bubble { background: var(--bg); color: var(--text); border-bottom-left-radius: 4px; border: 1px solid var(--border); }
.chat-input-wrap {
    display: flex; gap: 0.5rem; padding-top: 0.75rem;
    border-top: 1px solid var(--border); margin-top: 0.5rem;
}
.chat-input-wrap input { flex: 1; }

/* ═══════════ CERTIFICATE ═══════════ */
.cert-card {
    max-width: 700px; margin: 0 auto;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #dcfce7 100%);
    border: 2px solid var(--green);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-lg);
}
.cert-card::before {
    content: ''; position: absolute; inset: 8px;
    border: 1px dashed rgba(5,150,105,0.25);
    border-radius: var(--radius);
    pointer-events: none;
}
.cert-badge { font-size: 3.5rem; margin-bottom: 0.5rem; }
.cert-title { font-size: 1.6rem; font-weight: 800; color: var(--green-dark); margin-bottom: 0.25rem; }
.cert-subtitle { font-size: 0.85rem; color: var(--text-2); margin-bottom: 1.5rem; }
.cert-details { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; text-align: left; margin: 1.5rem 0; }
.cert-detail-item { padding: 0.75rem; background: rgba(255,255,255,0.7); border-radius: var(--radius-sm); }
.cert-detail-label { font-size: 0.7rem; color: var(--text-3); font-weight: 600; text-transform: uppercase; }
.cert-detail-val { font-size: 1rem; font-weight: 700; color: var(--text); }
.cert-grade { font-size: 4rem; font-weight: 900; color: var(--green); line-height: 1; }
.cert-grade-label { font-size: 0.8rem; color: var(--text-2); }
.cert-footer { margin-top: 1.5rem; font-size: 0.75rem; color: var(--text-3); }

/* ═══════════ CREDIT SCORE CARD ═══════════ */
.credit-card {
    background: var(--gradient-b); color: #e2e8f0;
    border-radius: var(--radius-lg); padding: 2rem;
    max-width: 500px; margin: 1.5rem auto;
    text-align: center;
}
.credit-score-value { font-size: 3.5rem; font-weight: 900; color: var(--green); margin: 0.5rem 0; }
.credit-grade { font-size: 1.2rem; font-weight: 700; margin-bottom: 1rem; }
.credit-bars { display: flex; gap: 4px; justify-content: center; margin: 1rem 0; }
.credit-bar { height: 8px; width: 40px; border-radius: 4px; background: #334155; }
.credit-bar.filled { background: var(--green); }

/* ═══════════ FILTERS / TABS ═══════════ */
.filter-bar {
    display: flex; gap: 0.5rem; margin-bottom: 1.25rem; flex-wrap: wrap; align-items: center;
}
.filter-chip {
    padding: 0.4rem 1rem; border-radius: 20px; font-size: 0.78rem;
    font-weight: 600; border: 1.5px solid var(--border); background: var(--surface);
    color: var(--text-2); cursor: pointer; transition: all 0.15s;
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); }
.filter-chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ═══════════ SEARCH ═══════════ */
.search-box {
    position: relative; max-width: 350px;
}
.search-box input {
    width: 100%; padding: 0.55rem 0.85rem 0.55rem 2.2rem;
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-size: 0.85rem; background: var(--surface); font-family: var(--font);
}
.search-box input:focus { outline: none; border-color: var(--accent); }
.search-box::before { content: '🔍'; position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%); font-size: 0.85rem; }

/* ═══════════ EMPTY STATE ═══════════ */
.empty-state { text-align: center; padding: 2rem; color: var(--text-2); font-size: 0.86rem; }
.empty-state .es-icon { font-size: 2.5rem; margin-bottom: 0.5rem; opacity: 0.5; }

/* ═══════════ SPINNER ═══════════ */
.spinner { width: 24px; height: 24px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 1.5rem auto; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════ TOAST ═══════════ */
.toast {
    position: fixed; bottom: 2rem; right: 2rem;
    background: var(--text); color: #fff;
    padding: 0.75rem 1.35rem; border-radius: var(--radius-sm);
    font-size: 0.86rem; font-weight: 500; box-shadow: var(--shadow-lg);
    z-index: 9999; transform: translateY(120%); transition: transform 0.3s ease;
}
.toast.show { transform: translateY(0); }
.toast.success { border-left: 4px solid var(--green); }
.toast.error   { border-left: 4px solid var(--red); }

/* ═══════════ ANIMATIONS ═══════════ */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.15); opacity: 0.8; } }
.animate-in { animation: fadeIn 0.4s ease both; }
.animate-in:nth-child(2) { animation-delay: 0.05s; }
.animate-in:nth-child(3) { animation-delay: 0.1s; }
.animate-in:nth-child(4) { animation-delay: 0.15s; }
.animate-in:nth-child(5) { animation-delay: 0.2s; }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1024px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); box-shadow: 4px 0 20px rgba(0,0,0,0.15); }
    .main-wrap { margin-left: 0; }
    .sidebar-toggle { display: flex; }
    .dash-grid { grid-template-columns: 1fr; }
    .dash-grid-3 { grid-template-columns: 1fr 1fr; }
    .hero-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
    .loan-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .page-content { padding: 1rem; }
    .hero-grid { grid-template-columns: 1fr; }
    .dash-grid-3 { grid-template-columns: 1fr; }
    .sensor-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-card .card-value { font-size: 1.4rem; }
    .ring-wrap { flex-direction: column; }
    .cert-card { padding: 1.5rem; }
    .cert-details { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
    .chat-msg { max-width: 95%; }
    .filter-bar { gap: 0.35rem; }
    .filter-chip { padding: 0.3rem 0.75rem; font-size: 0.72rem; }
    .loan-stats { grid-template-columns: 1fr; }
}